Table 1.
Baseline characteristics
| RA (n = 274) | PsA (n = 129) | p | |
|---|---|---|---|
| Age, years | 55 ± 11.9 | 44.8 ± 12.2 | < 0.001 |
| Female | 207 (75.5%) | 69 (53.5%) | < 0.001 |
| Disease duration, years | 9 (0–51) | 8 (0–40) | 0.030 |
| Education level completed | |||
| Primary School | 246 (100%) | 98 (100%) | NS |
| Secondary School | 176 (71.5%) | 90 (91.8%) | < 0.001 |
| University | 56 (22.8%) | 59 (60.2%) | < 0.001 |
| Employment | |||
| Employed | 37 (66.1%) | 31 (91.2%) | 0.008 |
| Unemployed | 8 (14.3%) | 1 (2.9%) | NS |
| Student | 0 | 1 (2.9%) | NS |
| Other | 11 (19.6%) | 1 (2.9%) | 0.027 |
| Hours worked, weekly | 37.2 (11.7) | 41.1 (9.1) | NS |
| Smoking status | |||
| Never | 89 (35.6%) | 50 (45.5%) | NS |
| Ex | 94 (37.6%) | 35 (31.8%) | |
| Current | 67 (26.8%) | 25 (22.7%) | |
| HAQ score | 1.3 (0.64) | 0.89 (0.64) | < 0.001 |
| EMS, minutes | 30 (0–1440) | 30 (0–1440) | NS |
| RF positive | 195 (77.1%) | 2 (2.2%) | < 0.001 |
| ACPA positive | 31 (79.5%) | 0 (0%) | < 0.001 |
| Erosions* | 90 (47.1%) | 28 (31.5%) | 0.013 |
Values are expressed as n (%), mean (SD) or median (range)
HAQ Health Assessment Questionnaire, EMS early morning stiffness, RF rheumatoid factor, ACPA Anti-citrullinated protein antibodies
*On X-rays of the hands and feet